期刊论文

Synthesis of novel calix [4] arene derivatives and its adsorption properties towards Uranium (Ⅵ)

Peng, G.-W.

中文

化学工程

1005-9954

2020

48

6

16-22

10.3969/j.issn.1005-9954.2020.06.004

51574152:国家自然科学基金 11705085:国家自然科学基金 2017JJ2232:湖南省自然科学基金 2017JJ3262:湖南省自然科学基金 2017JJ4009:湖南省自然科学基金 2017CT5006:湖南省中央引导地方科技发展专项资金项目 :湖南省环境保护厅科研项目

本校为第一且通讯机构

以对叔丁基杯[4]芳烃为原料,用间氨基苯甲酸等化合物对其上沿进行羧基化改性,再利用1,3-二溴丙烷等化合物对其下沿进行功能化修饰,得到一种新型功能化材料间羧基苯偶氮基杯[4]芳烃溴代乙醚衍生物(MCA-BDED),并采用红外光谱、扫描电镜分别对其结构进行表征。考察溶液pH值、吸附时间、铀初始质量浓度、吸附剂投加量等因素对MCA-BDED吸附铀效果的影响,分析吸附过程中的反应动力学和吸附等温线。结果表明:在温度为25 ℃时,MCA-BDED吸附铀的最佳条件是pH值为4.0,铀初始质量浓度为20 mg/L,吸附剂MCA-BDED投加量为20 mg,吸附平衡时间为4 h。MCA-BDED对U(Ⅵ)的吸附过程符合准二级动力学模型,表明吸附过程...

Using the tert butyl calix[4]arene as raw materials, its upper rim was modified by carboxylation with M-aminobenzoic acid, and its low rim was modified by functional modification with 1, 3-dibromopropane. A new type of functional material M-carboxyphenylazo calix[4]arene bromine diethyl ether Derivatives (MCA-BDED) was obtained. The structure of MCA-BDED was characterized by FT-IR and SEM. The effects of pH value of U(Ⅵ) solution, adsorption time, initial uranium mass concentration, temperature, dosage of adsorbent on the adsorption of uranium...